/*
 * Tencent is pleased to support the open source community by making Angel available.
 *
 * Copyright (C) 2017 THL A29 Limited, a Tencent company. All rights reserved.
 *
 * Licensed under the BSD 3-Clause License (the "License"); you may not use this file except in
 * compliance with the License. You may obtain a copy of the License at
 *
 * https://opensource.org/licenses/BSD-3-Clause
 *
 * Unless required by applicable law or agreed to in writing, software distributed under the License
 * is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express
 * or implied. See the License for the specific language governing permissions and limitations under
 * the License.
 *
 */

package com.tencent.angel.ml

/**
  * Base class for all machine learning algorithm learner.
  */
import com.tencent.angel.ml.feature.LabeledData
import com.tencent.angel.ml.model.MLModel
import com.tencent.angel.worker.storage.DataBlock
import com.tencent.angel.worker.task.TaskContext

abstract class MLLearner(val ctx:TaskContext) {
  def conf = ctx.getConf();

  /**
    * Train a ML Model
 *
    * @param train : input train data storage
    * @param vali : validate data storage
    * @return : a learned model
    */
  def train(train: DataBlock[LabeledData], vali: DataBlock[LabeledData]): MLModel
}
